Electric system for transmitting angular positions.



P. KAMINSKI. ELECTRIC SYSTEM FOR TRANSMITTING ANGULAR POSITIONS.

APPLIOATION FILED AUG. 15, 1913.

Patented Dec. 29, 1914.

PAUL KAMINSKI, F NONNENDAMM, NEAR BERLIN, GERMANY, ASSIGNOR TO SIEMENS&: HALSKE A Ga, 0]? BERLIN, GERMANY, A CORPORATION OF GERMANY.

T S i ELECTRIC SYSTEM FOR TRANSMITTING ANGULAR POSITIONS.

1,122,942. Y Epeeification Letters Patent Patented Dec. 29, 1914.Application filed August 15, 1913. Serial No. 784,988. I

To all whom/it ma concern: such a way that one system, for instance a,-Be it known t at 1, PAUL KAMINSKI, it makes several-revolutions,whilethe other German citizen, and resident of Nonnensystem e ismakingat most one revolution damm, near Berlin, Germany, have inventedfor traversing its entire measuring range. certain new and usefulImprovements in The two sending elements 6 e.,, now, act in 60 ElectricSystems for Transmitting Angular a well known manner upon the receivingPositions, of which the following is a specifielement '0 '0 which arelocated at the recation. ceiving station E. The rotors of these sys- Myinvention relates to a systemof the tems are so constructed that uponbeing kind in which the adjustment 1s obtained by angularly displacedthey will act upon the '65 means of rotors which are commonly 1ncircuitsfor the driving motors M M the fluencing the position of the object uponformer, for instance, being destined for the which the position is to beproduced, and coarse and theilatter forthe fine adjustespecially to' anovel system of this characment. Both motors work upona diiierenter forproducing different positions of mtial or planetary gear I whoseintermediate- '70 'struments such as telescopes, diopters or wheel isrotatably mounted upon an arm contrivances for taking aim-upon anydeserving for the rotation-of the axle w for sired object such as searchlights and the displacing the object which shall follow the 1 like bymeans of a plurality of motors, one motion of the sending apparatus.From of said motors effecting the coar'se, the other this axle 'wfurthermore, a device is operthe line adjustment in any desiredplurality ated for again interrupting the contacts of steps. f providedon the receiving elements after wMy present. invention more particularlysaid object is in its proper position, and consists of an improvement ofthe system therewith cause the standstill'o'f the motors 25 forming partofv an application for patent M and M If, for instance, an adjustment-Ser. No. 599,173, filed by H. Barkhausen and is made at the sendingstation G, then at myself under date of Dec. 24, 1910. In the thereceiving station E the rotors of the two system described in theaforesaid applicareceiving-elements 0, and '0, in the arrangetiontheiadjustment'of the several steps can ment shownwill establish acontact at 11 and '80 be accomphshed either in succession to each krespectively and therewith close the cirother or sov that the severaladjustments are cuits for the motors M and M Both modependent on eachother in a certain mantors accordingly will start. If the motor M ner.My present invention, now, comprises for the coarse adjustment haseffected a corv a modification of thissystem in that the adresponding anular motionof the object by 85 j'usting devices areelectrically-independent the rotation of the planetary gear 1),, then 99of each other so that the adjustment of the by the axle w, theinterposed gear" a and coarse and the fine steps may be accomthe wormgear 8, the contact at 11 will again plished simultaneously. In brief mypresbe interrupted, at the same time interrupt- .ent invention consistsin interposing a difing the operating current for the motor'M 40ferential gear between the motors commonly The motor M Wlll continue tooperate until effecting the displacement of the object on the'fineadjustment has been accompl shed the onehand and the obj ect upon whichthe to, the desired degree, and by a correspondmotionshall betransmitted on the other ing motion of the planetary gear 7 this hand.Also the motors by providing proper motor will still further turn the obect to 45 ratios of gearing mayv be so chosen that be ad usted. 4 Theemplacement of t e obloo their sizes will be proportioned to the rangeect, on the other hand, will simultaneously of adjustment. act by meansof the gear a and further My invention will be more fullyundertransmission members u upon the contacts stood .by reference to theaccompanying It, which rema n closeduntil the fine ad ustdrawing whichshows in a diagrammatic ment also has reached its proper value. As

view one form for carrying my invention either motor traverses theentire scale of i t fi fl the svstem to be ad usted and the motor forThe sending apparatus G consists of two the fine ad ustment consequentlyWlll have sending elements e,, e, which maybe couto pass 0 through asmall range tlns 55 pied-to. each. other by gears or the like in lattermotor mayect upon th adj ing dedevices a th ree-phase alternatingcurrent rotor is located, the rotors of the corresponding. transmittingand receiving instruments being. connected by the three phase Wires. Inthe drawings these three wires are merely shown as emanating from theinstruments.

Moreover, .the rotor of the transmitter G is connected with the handlefor setting the desired"- angular position, whereas the rotor of thereceivers fi l-W are each connected with a contact spring respectively.The result'is that when the transmitter rotor {is moved angularly, thereceiver armature according to well known laws will follow into the sameangular position, Transmitting devices of this character are now Well'known' in the art, 'so that their detail description and illustrationhas beenomitted in the so present application. I w p 1 Instead of themovable contacts 6 and-la for the operationof the the drawing,also fixedcontacts may be employed in this case for adjustment thestators- 85 ofo, and a, are turned back to thesame-extent as the rotors have beenadjusted before from the sending sta-tion. It is of course understoodthat the switching for the circuits for driving the motors may be doneby .40 relays which are properly inter 'osed.- It is:

alsopossi-ble, as wellun rstoo by the art, ,to omitthe gear between therotors of the sending elements. A In this case preferably either rotorshoul be provided with-means for retaining the rotor in a plurality ofmotors, as shown in.

proper angular positions and then the adgusting of either rotor made bya separate iandle. Also the senders may be immediately connected with adiopter or any contfii'vance for taking. aim as well known to t eart,

havingthus described my in mt ibn claim as new and desire to secure byLetters Patent ofthe United States 1. An electric system for producingangir' lar positions consisting of a sending. element for fineadjustment, a sending element for J coarse adjustment, correspondingreceivin elements which are respectively co'nnectfe with said sendingelements, a motor electrically controlled from said receiving elementfor coarse adjustment, a second electric inotor controlled from saidreceiving element for fine adjustment and a difi'erential gearinterposed betwee'nea chof said motors and the object upon which theangular position shall be produce "2. Anel'ectric'system forprod'ucingaga.

lar positions consisting of a sending elementfor line adjustment,asending element for coarse adjustmenfl corresponding receiving elementswhich are respectively connected with said sending element's,-a'm ot'orelectri: cally controlledlfiomsaid" receiving element- .for coarseadjustment, a second motorlel'ecratio ofgearing to said object. thansaid motor for coarse adjustment,

In witness whereof I have hereunto set my signature inthe presence oftwo subscribin .witnesses.

ram Kiiinasm. Witnesses:

HnrmrHAsrnn, V ARTHUR Sennonnnn.

